sys.indicator, sys.video, and state_initials

[ymote]

Summary

Two capabilities, both following the rule the profile is built on — a card names WHAT it needs and the runtime fetches it, so no fact is ever written into a card.

sys.indicator + IndicatorPlot — compare countries on one World Bank series. The plot takes countries, an indicator code and a span; the source answers each country's numbers from the same request, indexed in the order the card listed them (so row 0's figures and the first line on the chart are the same country).

sys.video + Thumb — a YouTube search as a row source: id, title, channel, length, views, age, thumbnail, and embed — a player url the helper builds, because L0 has no string concatenation and a card must not assemble a URL. Thumb is Photo's row-sized sibling (Photo fills its width because it is a backdrop; a list row needs a fixed 16:9 tile).

state_initials() is new and load-bearing: a host resolving a source argument BEFORE realize — which countries to ask about, before there is a tree — cannot read the store (nothing written yet) or the seed data (an initial is a declaration, not data). Without it the request went out with an empty country list and the rows came back empty while the chart drew fine: an accepted card with half a screen wrong.

Also here, each found on a phone rather than in a test:

• text arguments needed Debug quoting — a bare interpolation emitted sys.indicator(CHN,IND, …), two arguments where one was meant, answering nothing;
• a bare read.title now reads row 0, since the indicator's own name is the same for every row and the card titles itself with it;
• the never-read diagnostic counts an event WRITE as a use, so a write-only actuator source (sys.link) is not reported dead.

252 profile tests green.

🤖 Generated with Claude Code

[r9s-codereview]

🤖 AI Code Review

Claude CLI exited with code 1:

✅ No significant issues found.

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